Programmed 2008-2009 G8 BCM | Body Control Module 15880684

Restore Full Control Over Your Vehicle’s Electronics

If you’re dealing with baffling electrical issues in your 2008-2009 Pontiac G8—like flickering lights, power windows with a mind of their own, or a security system that won’t cooperate—a failing Body Control Module (BCM) is often the culprit. As the central command center for your vehicle’s body electronics, a faulty BCM can cause widespread and frustrating problems. This isn’t just an inconvenience; it can affect vehicle function and safety. In my 20+ years of diagnostics, I’ve seen how a bad BCM can mimic a dozen other problems, leading to wasted time and money on incorrect repairs.

This replacement Body Control Module is the definitive solution. We take the biggest headache out of the repair process: programming. Simply provide us with your vehicle’s VIN after purchase, and our technicians will program the module with the latest GM software updates specific to your car. This means you receive a part that is ready for installation right out of the box, eliminating the need for an expensive trip to the dealership for programming. This service ensures that all your car’s options and security information are correctly configured, restoring your vehicle to its proper operational state. A new, correctly programmed 2008-2009 G8 BCM is the key to resolving those persistent electrical gremlins for good.

Is Your Pontiac G8 Showing These Symptoms?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need. Keep an eye out for Diagnostic Trouble Codes (DTCs) like U0140 (Lost Communication With Body Control Module).

• ✔ Unpredictable power windows, door locks, or mirrors
• ✔ Interior or exterior lights flickering, staying on, or not working at all
• ✔ Erratic or non-functional instrument cluster gauges
• ✔ Vehicle security system acting up or preventing the car from starting
• ✔ Horn honking unexpectedly or not working when pressed
• ✔ Intermittent warning lights on the dashboard with no other apparent cause

A Straightforward Guide to Your BCM Installation

Installing your new 2008-2009 G8 BCM is a manageable job for a confident DIYer. The BCM in the Pontiac G8 is located behind the glove box in the center dash area.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
2. Access the Module: Open and remove the glove box assembly to gain access to the BCM. This may require removing a few screws or clips.
3. Disconnect and Remove: Carefully disconnect all electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
4. Install the New BCM: Mount your new, pre-programmed module in the same location and securely reconnect all electrical connectors.
5. Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to ensure everything is working correctly.
6. Perform Relearns if Needed: If you see an airbag light or notice brake light issues, you may need to perform the post-installation procedures noted below with a compatible scan tool.

Important Post-Installation Notes

While our programming handles the heavy lifting, some vehicle systems may require a final handshake with the new BCM. Please be aware of the following potential procedures:

• Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade diagnostic tool to sync the airbag system with the new BCM.
• Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be required to ensure proper brake light and traction control operation.

Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.

Verified Vehicle Compatibility List

This Body Control Module is a direct replacement for part number 15880684 and is compatible with a wide range of GM vehicles. Please verify your original part number matches one in the list below. This module fits the following models:

This module is a replacement for the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.